Multiple ORACLE_HOME’s(10g,11g) on Windows and LISTENER running from 11G HOME

January 10, 2014

As we know Single Listener would support Multiple ORACLE_HOME Databases and we need to start Listener with higher version.

In my case, connection to 10g (dbname q041) works fine, but Connection to 11g (dbname d041) fails as below with Error :ORA-12514: TNS:listener does not currently know of service requested in connect descriptor